The On Demandmode exports a document immediately, while scheduled mode adds the document to a scheduled queue to be processed later.
On Demand模式立即导出文档，而Scheduled模式则将文档添加到计划队列中，留待以后处理。
2
Furthermore, the author explores the on-demandmode and gives the on-demand strategy based on time compensation and band width compensation.
研究了请求方式的文件推送模式，提出了基于时间补偿和带宽补偿的按需推送策略。
3
In this mode of operation it is important that a dialogue is underway to identify how the demand will be satisfied in the event the proposal becomes an approved project.